Amps to KVA Calculator 240V
Convert amps at a fixed 240 V supply for single-phase or three-phase systems.
Result
Ready—Enter positive values to calculate.
How Amps to KVA Calculator 240V Works
To convert amps to kVA at 240 volts, select the supply type (single-phase or three-phase) and enter the current. The calculator applies 240 V as a fixed voltage.
Select single-phase or three-phase supply
Single-phase 240 V is standard for residential circuits in many regions. Three-phase 240 V (line-to-line) serves commercial and industrial equipment.
Enter the current in amps
Type the ampere value from the circuit breaker rating, equipment nameplate, or a clamp meter reading.
Read the kVA result at 240 V
Single-phase uses kVA = (A × 240) ÷ 1,000. Three-phase uses kVA = (√3 × A × 240) ÷ 1,000. The calculator displays the result, active formula, and supply mode.
The voltage is fixed at 240 V. Use the main converter on the homepage to calculate kVA at a different voltage.
Amps to KVA at 240V Formula
Two formulas convert amps to kVA at a fixed 240 V supply, depending on the phase configuration.
Single-phase · 240 V
Multiply the current in amps by 240, then divide by 1,000.
Three-phase · 240 V line-to-line
Multiply 1.732 by the current in amps and 240, then divide by 1,000.
Worked examples
30 A single-phase at 240 V
kVA = 30 × 240 ÷ 1,000 = 7.2 kVA50 A three-phase at 240 V
kVA = 1.732 × 50 × 240 ÷ 1,000 = 20.78 kVAAmps to KVA at 240V Conversion Chart
Pre-calculated kVA values at 240 V for single-phase and three-phase systems at common amperage ratings.
kVA at 240 V — single-phase and three-phase
| Amps | kVA (Single-phase) | kVA (Three-phase) |
|---|---|---|
| 10 A | 2.4 | 4.16 |
| 15 A | 3.6 | 6.24 |
| 20 A | 4.8 | 8.31 |
| 30 A | 7.2 | 12.47 |
| 40 A | 9.6 | 16.63 |
| 50 A | 12.0 | 20.78 |
| 60 A | 14.4 | 24.94 |
| 80 A | 19.2 | 33.26 |
| 100 A | 24.0 | 41.57 |
| 200 A | 48.0 | 83.14 |
Single-phase: kVA = (A × 240) ÷ 1,000. Three-phase: kVA = (1.732 × A × 240) ÷ 1,000. All values are rounded to 2 decimal places.